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| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2020-06-09 00:02:39 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-09 14:29:15 -0700 |
| commit | 62a502cc91f97e3ffd312d9b42e8d01a137c63ff (patch) | |
| tree | 2b91438f58105b23f50d45e42df1d82e10d04669 | |
| parent | c96b6acc8f89a4a7f6258dfe1d077654c11415be (diff) | |
| download | linux-62a502cc91f97e3ffd312d9b42e8d01a137c63ff.tar.gz linux-62a502cc91f97e3ffd312d9b42e8d01a137c63ff.tar.xz | |
net: mvneta: do not redirect frames during reconfiguration
Disable frames injection in mvneta_xdp_xmit routine during hw
re-configuration in order to avoid hardware hangs
Fixes: b0a43db9087a ("net: mvneta: add XDP_TX support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/marvell/mvneta.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 4cc9abd61c43..946925bbcb2d 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -452,11 +452,17 @@ struct mvneta_pcpu_port { u32 cause_rx_tx; }; +enum { + __MVNETA_DOWN, +}; + struct mvneta_port { u8 id; struct mvneta_pcpu_port __percpu *ports; struct mvneta_pcpu_stats __percpu *stats; + unsigned long state; + int pkt_size; void __iomem *base; struct mvneta_rx_queue *rxqs; @@ -2113,6 +2119,9 @@ mvneta_xdp_xmit(struct net_device *dev, int num_frame, struct netdev_queue *nq; u32 ret; + if (unlikely(test_bit(__MVNETA_DOWN, &pp->state))) + return -ENETDOWN; + if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) return -EINVAL; @@ -3568,12 +3577,16 @@ static void mvneta_start_dev(struct mvneta_port *pp) phylink_start(pp->phylink); netif_tx_start_all_queues(pp->dev); + + clear_bit(__MVNETA_DOWN, &pp->state); } static void mvneta_stop_dev(struct mvneta_port *pp) { unsigned int cpu; + set_bit(__MVNETA_DOWN, &pp->state); + phylink_stop(pp->phylink); if (!pp->neta_armada3700) { |